Daniel light



(No Model.)`

D. LIGHT. FILTBEING PRESS.

Patented Feb @y l y ATTORNEYS N, :1L-rensY rma-umagnphur. wuninmm u. c.

2 Sheents-Sheet 2.

(No Model.)

D. LIGHT. PIMJERINGV PRESS.

Patented Feb'. 18, 1890.

MII/ENTO/i Q Hymn@ di WIM/8858:

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ings, forming part hereof, wherein- UNITED STATES DANIEL LICHT, OFBROOKLYN, NEV

- OF SAME PATENT OFFICE.

YORK, ASSIGNOR TO JOSEPH GLATZ,

PLACE.

FlLTERlNG-PRESS.

SPECIFICATION forming part of Letters Patent No. 421,503, dated February18, 1890.

Application tiled September 2, 1889.

To LZZ whom t may concern.-

Be it known that I, DANIEL LICHT, a resident of Brooklyn, Kings county,New York, have invented an Improved Filtering-Press, of which thefollowing is a specification, reference being had to the accompanyingdraw- Fi'gure l is a vertical central section of my improvediilteringpress. Fig. 2 is a plan or top view looking on that part of thepress which is below the line es cc, Fig. l. Fig. 3 is a plan or topview looking` on that part of the press which is below the line y y,Fig. l, the top screen or perforated plate directly below said linebeing partly broken away; and Figs. 4 and 5 are detail viewshereinaftermore fully referred to.

This invention relates to a filtering-press in which the liquid to befiltered is forced by a considerable pressure in an upward directionthrough series of perforated plates, between which separate and distinctchambers are formed,'all said chambers finally discharging theircontents into a receiving-chamber, from which the outlet taking the pureliquid extends.

The invention principally consists in placing in the bottoni of saidfinal receiving-chamber a series of rattan plugs as filtering media.

The invention also consists in other details of improvement hereinaftermore fully specified.

In the drawings, Fig. l, is illustrated a double iilteringpress-that isto say, one for filtering two separate columns of liquid-one above theother. I shall describe each press as a unit only. Each press consistsof four (more or less) pansA B O D, placed one above the other, eachupper pan being shallower than the one next below, as shown. Thelowermost pan A receives the liquid to be filtered through a pipe E. Thenext upper pan B has a perforated bottom c. The next upper pan O has aperforated bottom l) and a perforated top d. The top pan D, whose bottomis formed by the perforated top d of the pan C, contains in its topplate e a series of plugs f. Fig. 5 shows the construction of each ofthese plugs in sectional View, and Fig. et is a top view of the samewithout the cap. Each plug f is from the plate cor otherwise properlyheld in.

Serial No. 322,705. (No model.)

made of rattan withthe fiber running vertically, and is placed over ahole g in the plate e, and is held in place by a perforated cap 7L, thatis screwed to a boss projecting place.

Above the pan D is the receiving-chamber F, into which the filteredmatter finally enters, and from which the outlet-pipe G extends.

Each pan A B O D is or may be divided by radial or other partitions t'(see Fig. 3) into a number of compartments of segmental or other form.

The supply-pipe E has as many branches for supplying the liquid to thepan A as said pan A has chambers formed by partitions t', so that eachof these subdivisions or chambers may receive its own supply of liquidto be liltered.

The pans A B O D are supplied with suitable iiltering material, whateverthat may be,A and the liquid to be filtered is forced under considerablepressure into the pan A, rising through the filtering matter therein,passing through the perforated partition a into the pan B, thencethrough the perforated partition b into the pan C, and-thence throughthe perforated partition d into the pan D. From the pan D the liquid canonly escape into the receivingchamber F through the pores of the rattanplugs f. No other outlet is provided than that which is furnished bythese rattan plugs.

It is well known that the pores of rattan plugs are so fine that noforeign matter other than liquid can pass through the same and then onlyunder considerable pressure, and that they are impermeable to liquid ina transverse direction; hence by means of these plugs I avoid thepassage of any fibers or other impurity with the liquid into thereceiving-chamber F. By having the plugs f held in manner described theyare easily removable, and can readily be replaced by others when wornout or clogged. y

The syst-em of pans hereinabove described, being placed one above theother, may be used in series, as shown, or singlymthat is, only one setof pans A B C D and receivingchamber F may be used in one press, or asroo many as desired, one set above the other, the drawings showing twosets. All the pans are placed on a suitable framing H and crowdedtogether by a screw I, Which takes hold of the cap of the uppermostreceivingchamber F. When the screw I is turned to lift said cap, each ofthe remaining pans or vessels may be taken off by hand, suitable handlesbeing provided for the purpose. (See Fig. 3.)

Each of the pans has or may have a testcock j, to enable the attendantto Watch the operation of Jthe filtering apparatus; and I also use, bypreference, in contact with the perforated bottom a and top d, aperforated plate of copper or the like k,which serves to retain thefiltering mass in the pan to which it appertains before the remainingpan is put in position.

A suitable drip-pan J may be placed below the entire apparatus, asshown.

Having now described my invention, what I claim is- 1. The perforatedplate c, combined with the rattan plug f, placed in its perforation, andWith the perforated cap h, which holds said plug removably in position,substantially as described.

2. In a filtering-press, the combination of a series of pans A B C D,having perforated partitions between them, with the receivingchamber Fand perforated partition c, having rattan plugs f therein, as specified.

DANIEL LICHT.

Witnesses:

A. v. BrEsEN, HARRY M. TURK.

